To enter the Bowser course, you must have at least 70 stars; it is located in the highest part of the castle. Make your way up the course, collecting the 8 red coins. The final coin is underneath the stairs right before the green warp tube. When battling Bowser, you must throw him against the mines so that they explode. Be careful, the land begins to break away after his first hit.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Secret Star 15 and Bowser in the Sky Video Walkthrough
Super Mario 64 - Secret Stars 12-14 Video Walkthrough
Star 12 - Find the Toad on the second floor behind the staircase to the 3rd floor. Talk to him to get this star.
Star 13 - Find the third Toad next to the grandfather clock. Talk to him.
Star 14 - Go to the chamber with the Rainbow Ride, and enter the secret rainbow level on the opposite side. Fly around and grab the 8 red coins.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Secret Star 11 and Bowser in the Fire Sea Video Walkthrough
Bowser can be found behind the downstairs left star door. To complete this course, find 8 red coins, then defeat Bowser in his fire sea domain. Watch the video to see the path to take.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Secret Star 10 - The Bunny Rematch Video Walkthrough
Go back to the room with the golden bunny. Catch him a second time for this secret star.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Secret Stars 7-9 and the Metal Cap Video Walkthrough
Star 7 - Using the first Bowser Key, unlock the door across from Big Boo's Haunt. Go to the room at the end of the hall, then catch the bunny running around in the hallways.
Star 8 - Go back to the room you unlocked for Star 7. Go through the opposite door with the star on it. In this room find the Toad and talk to him.
Star 9 - Collect 8 red coins in the metal cap course.
Metal cap - Enter the Hazy Mazy Cave course. Take the left hallway until you reach the room with the serpent monster. Climb on its head, then ride until you see a ledge with a metal door. Go through the door, and complete the short course. Press the green switch to activate the metal cap boxes.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Secret Star 6 and the Vanish Cap Under the Moat Video Walkthrough
In the basement, go to the door without the star in it, jump in the pool, and swim until you reach another cavern with 2 pillars in the water. Stomp both pillars to drain the water, uncovering the secret entrance to the course.
Collect 8 red coins along the way, then hit the blue Vanish Cap switch and collect the star.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Secret Star 5 in Bowser's Dark World Video Walkthrough
You must have at least 8 stars before you can enter this course. It is the door with the star on it at the top of the stairs in the main hall.
Pick up the 8 red coins along the course before defeating Bowser 1 and getting his key.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Secret Star 4 in the Tower of the Wing Cap Video Walkthrough
After you collect 10 stars, there will be a bright shining light in the lobby. Look up at the light to reach this course.
Collect the 8 red coins throughout the course, then press the red Wing Cap switch, and grab the star.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Secret Star 3 in The Secret Aquarium Video Walkthrough
This is located in Jolly Roger's Bay's painting room. When you enter from the lobby, go right and double jump into the hole.
Collect the 8 red coins for this star.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Secret Stars 1 and 2 in Peach's Secret Slide Video Walkthrough
In the main lobby, go up the stairs and go right to the 1 Star door. Jump through the window to the right, with the picture of Princess Peach.
In order to get both stars, you will need to complete this level twice. The first time you will get a star just for completing the level, and the second time you must get a fast time (20 seconds or so) to earn the star.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Star 7 in Rainbow Ride Video Walkthrough
Collect 100 coins in the course.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Stars 4-6 in Rainbow Ride Video Walkthrough
Star 4 - Instead of riding the carpet from the beginning, make a long jump to the pole on the opposite side. Follow the path up until you reach a fork in the road. Go left/up to the slope with the box steps.
Star 5 - Follow the same path as star 4, except continue to go straight at the fork in the path. Press the purple exclamation button and the pyramids will invert, allowing you to climb to star 5.
Star 6 - Ride the magic carpet back to the maze. Wall jump up the high path and talk to the Bob-omb to get the cannon unlocked. Ride the carpet up further to the fork in the paths. Take the left fork. When you reach the ship, get in the cannon and aim for the middle of the rainbow circle.
Super Mario Video Walkthrough Series for N64
Super Mario 64 - Stars 1-3 in Rainbow Ride Video Walkthrough
Star 1 - Ride the magic carpet up the rainbow. When your reach a fork in your path, choose the carpet on the left. Get onto the ship and collect star 1.
Star 2 - Ride the magic carpet up the rainbow again, except choose the path to the right when you reach the fork. Be careful when you reach the fireplace.
Star 3 - Ride the magic carpet until you reach the spinning platforms. Instead of following the carpet, go straight to reach a maze. Collect the red coins in the maze.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Star 7 in Tick Tock Clock Video Walkthrough
Collect 100 coins in the course. It may be easier to do so if you enter when the parts are stopped.
Super Mario Video Walkthrough Series for N64
Super Mario 64 - Stars 4-6 in Tick Tock Clock Video Walkthrough
*hint: Depending on the time on the clock's face when you go in, the parts inside will move at different speeds.
Star 4 - Make your way up the clock (while the parts are moving) until you reach the second second hand. Ride it to the Thwomp, who you must jump on top of to reach star 4.
Star 5 - Climb up the clock until you get just past the pole. Go up one level, then long-jump to the mesh cage. There are three blocks that come out of the wall, jump on them until you can reach the star.
Star 6 - Jump into the clock on the hour, to stop the parts from moving. Collect the 8 red coins for this star.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Stars 1-3 in Tick Tock Clock Video Walkthrough
*hint* Enter the clock exactly on the hour, and the parts will be frozen so you can move around easier.
Star 1 - Make your way to the top of the clock, then jump into the cage where star 1 is kept.
Star 2 - Go past the cage that held star 1 and follow the path to the end to get star 2.
Star 3 - Go into the clock while it is moving, and make your way up to the moving second hand. Ride it until it gets to star 3.
Super Mario Video Walkthrough Series for N64
Super Mario 64 - Star 7 in Tiny-Huge Island Video Walkthrough
Collect 100 coins throughout the course.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Stars 4-6 in Tiny-Huge Island Video Walkthrough
Star 4 - Find five secrets on the island. They are: the square cave where cannonballs come out, the mouse hole in the mountain, the pool at the top of the mountain, the hole on the beach, and the Bob-omb cannon. The video shows the exact locations, and you must do this as Huge Mario.
Star 5 - As Tiny Mario, enter the cave at the end of the bridge over the beach. Collect the 8 red coins.
Star 6 - As Huge Mario, climb to the top of the island and stomp in the pool. Then find a size pipe and morph into Tiny Mario. Go back to the top of the island and jump down the hole where the pond was. Defeat Wiggler to get this star.
Super Mario Video Walkthrough Series for N64
Super Mario 64 - Stars 1-3 in Tiny-Huge Island Video Walkthrough
Star 1 - Jump to the left across the water until you reach a pipe. Climb through the pipe. You will pop up in the same spot, just smaller. Punch and kick the piranha plants that pop up. After you get the 5th one, the star will pop up.
Star 2 - Make your way to the top of the island as Tiny Mario.
Star 3 - Go up the island until you get past the area where the cannon balls come out. Talk to Koopa the Quick who will challenge you to a rematch. Race him down the hill past the bridge to the Koopa Shell Flag to get star 3.
Super Mario Video Walkthrough Series for Nintendo 64
Super Mario 64 - Star 7 in Tall Tall Mountain Video Walkthrough
Collect 100 coins to earn this star.
Super Mario Video Walkthrough Series for N64